The Kellerman Matrices
Long time collector and author of the excellent ‘Star Wars Vintage Action Figures: A Guide for Collectors’ book, John Kellerman, has produced a pair of matrices listing known proof cards and known card front and back combinations. A genuinely indispensable collecting resource.

KennerCanada.com
An excellent website, created by Jim Mc Callum, dedicated to all (Star Wars) things Canadian and also 2D Kenner preproduction paper items.

ACTCollector
Australian collector Alex K has created this website to showcase his collection – including an impressive array of proof cards and Cromalins.

Lando’s Locker
Not where Lando keeps his sports kit, but an excellent fan site dedicated to vintage Star Wars figures – especially variations.

Thank you to everybody who has provided input – either evidence of numbers and sales, or pictures for use as thumbnails or in the galleries or just general hints, tips and advice!